<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="../vue.js"></script>
</head>

<body>
  <div id="app">
    <input type="text" v-model="search">
    <ul>
      <li v-for="item in newPearson" :key="item.id">{{item.name}}-----{{item.age}}</li>
    </ul>
  </div>
  <script>
    Vue.config.productionTip = false;
    
    const vm = new Vue({
      el: "#app",
      data() {
        return {
          search:'',
          pearson:[
            {id:'001',name:'徐凤年',age:18},
            {id:'002',name:'曹长卿',age:35},
            {id:'003',name:'李淳罡',age:60},
            {id:'004',name:'李白',age:24}
          ],
          newPearson:[]
        }
      },
      watch:{
        search:{
          immediate:true,
          handler(newValue){
            this.newPearson = this.pearson.filter(item => {
              return item.name.includes(newValue)
            })
          }
        }
      }
    })
  </script>
</body>

</html>